Controlling a power level of an uplink control channel

ABSTRACT

A technique includes, in mobile station that is part of a coordinated multi-point reception transmission/reception (CoMP) system, receiving a message from a base station identifying at least one parameter specific to the mobile station or specific to a reception set used by the mobile station; and regulating power in communications by the mobile station based at least in part on the parameter(s).

This application claims the benefit under 35 U.S.C. §119(e) to U.S. Provisional Patent Application Ser. No. 61/589,774 entitled, “ADVANCED WIRELESS COMMUNICATION SYSTEMS AND TECHNIQUES,” which was filed on Jan. 23, 2012, and is hereby incorporated by reference in its entirety.

BACKGROUND

For purposes of improving wireless communication performance, a multiple input/multiple output (MIMO)-based system may be employed, which uses multiple transmitters and multiple receivers for each communication channel. For third generation partnership project (3GPP) long term evolution (LTE), the MIMO system is implemented as a coordinated multi-point transmission/reception (CoMP) technique in which signals from multiple transmission and reception antennae are coordinated and combined. This coordination/combination of communications for uplink and downlink communications enhances communication performance and quality, especially for a mobile station (called “user equipment”) that is located near the edge of a particular cell.

More specifically, a given mobile station may be disposed close to the edge of a cell, and as such, the mobile station may receive signals from multiple access points of multiple cells. The CoMP technique addresses the potential interference problem by jointly scheduling communications with the mobile station between several cells, rather than an alternative scheme in which the mobile station communicates with a single cell. For uplink communications (communications in which data is transmitted from the mobile station to the base station), the CoMP technique involves jointly receiving data from the mobile station at multiple reception antennae. For downlink communications (communications in which data is received by the mobile station), the CoMP technique coordinates transmissions between multiple transmission antennae and the mobile station.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram illustrating cells of a wireless communication system according to an example implementation.

FIG. 2 is a flow diagram depicting a mobile station specific technique to regulate a power level of an uplink control channel according to an example implementation.

FIG. 3 is a signal flow diagram depicting communications between a mobile station and a base station pursuant to the technique of FIG. 2 according to an example implementation.

FIG. 4 is a flow diagram depicting a reception point set specific technique to regulate a power level of an uplink control channel according to an example implementation.

FIG. 5 is a signal flow diagram depicting signals communicated between a mobile station and a base station pursuant to the technique of FIG. 4 according to an example implementation.

FIG. 6 is a schematic diagram of a mobile station according to an example implementation.

DETAILED DESCRIPTION

Referring to FIG. 1, for purposes of enhancing communication quality and performance for wireless communications between mobile user equipment (called “mobile stations 30” herein) and base stations 32 (where each base station 32 includes a wireless access point 24 and an evolved node-B (enB) 31, for example), a wireless communication system 10 uses multiple input/multiple output (MIMO) transmission and receiving schemes. MIMO is a wireless technology that uses multiple transmitter and receiver antennae to transfer more data at the same time. In general, MIMO takes advantage of a radio phenomenon called “multipath,” where transmitted information bounces off of walls, ceilings, and other objects, reaching and receiving antennae multiple times via different angles and at slightly different times. The MIMO technique leverages multipath behavior by using multiple start transmission and reception points with an added spatial dimension to increase performance and range. Multiple antennae send and receive multiple spatial streams at the same time, which allow the antennae to transmit and receive simultaneously. MIMO enables antennae to combine data streamers arriving from different paths and at different times to effectively increase receiver signal-capturing power.

As a more specific example, in accordance with the techniques and systems that are disclosed herein, wireless communications within the wireless communication system 10 occur pursuant to a coordinated multi-point transmission/reception (CoMP) technique in which a given mobile station 30 communicates using multiple transmission points and multiple reception points. In this manner, in the wireless communication system 10, the mobile station 30 may communicate in a coordinated fashion with base stations 32 of multiple cells 20.

More particularly, in accordance with some implementations, the mobile station 30 may communicate with the base stations 32 pursuant to the third generation partnership project (3GPP) long term evolution (LTE) standard (the “LTE standard”) in which data is not communicated in the same channel as control data. In this manner, pursuant to the LTE standard, a given mobile station 30 may transmit uplink control information over an associated physical uplink control channel (PUCCH). Thus, each mobile station 30 of the wireless communication system 10 uses an associated PUCCH to communicate control data, which regulates communications over the user data channels. For purposes of coordinating transmissions over the different PUCCHs and preventing interference among the PUCCHs, the wireless communication system 10 regulates the power levels of the different PUCCHs.

Pursuant to Release 10 of the 3GPP LTE standard, the power level of the PUCCHs are regulated on a per cell basis. In other words, the PUCCHs used by the mobile stations 30 within the same cell 20 are regulated to have the same power level. However, such a scheme may not adequately control interference among neighboring cell uplink transmissions for PUCCHs that are being used by mobile station 30 s near cell edges.

Therefore, in accordance with techniques and systems, which are disclosed herein, a power level for a given PUCCH for a given mobile station 30 is regulated either (depending on the particular implementation) based on the identity of that specific mobile station 30 or based on an identity of a specific reception point set configuration that is used by the given mobile station, along with potentially other mobile stations. Thus, the power levels of the PUCCHs for mobile stations 30 within the same cell 20 may be independently regulated and as such, may vary with respect to each other for purposes of enhancing communication quality and performance.

Turning now to the more specific details, in accordance with some implementations, a power level (called “P_(PUCCH)(i)” below) for a given PUCCH may be a function of several factors:

$\begin{matrix} {{{P_{PUCCH}(i)} = {\min \begin{Bmatrix} {P_{{CMAX},C}(i)} \\ \begin{matrix} {P_{0\; \_ \; {PUCCH}} + {PL}_{C} + {H\left( {n_{{CQI},}n_{{HARQ},n_{{SR},}}} \right)} +} \\ {{\Delta_{F\; \_ \; {PUCCH}}(F)} + {\Delta_{TxD}\left( F^{\prime} \right)} + {g(i)}} \end{matrix} \end{Bmatrix}\left( {{dB}\; m} \right)}},} & {{Eq}.\mspace{14mu} 1} \end{matrix}$

where “Δ_(F) _(—) _(PUCCH)(F)” represents a key parameter that characterizes the P_(PUCCH)(i) power level and is used below to categorize the power level of the PUCCH: a larger value for the Δ_(F) _(—) _(PUCCH)(F) parameter means a corresponding relatively larger power for the PUCCH and a smaller value for the Δ_(F) _(—) _(PUCCH)(F) parameter means a corresponding relatively smaller power for the PUCCH. In general, the Δ_(F) _(—) _(PUCCH)(F) parameter may be varied among the PUCCH channels used by mobile stations 30 of a given cell 20, as described herein for purposes of compensating differences among the power levels of these channels to minimize interchannel interference. The other parameters of Eq. 1 are described in Section 5.1.2 of Third Generation Partnership Project (3GPP) Technical Specification (TS) 36.213, entitled, “Physical Layer Procedures,” V. 10.2.0, Rel. 10 (2010).

In general, the set of available values for the Δ_(F) _(—) _(PUCCH)(F) parameter is controlled in part by the PUCCH format. In this manner, a given PUCCH format depends on such factors as the modulation scheme, the number of bits per subframe and the type of control information used for the PUCCH communications. The particular values available for the Δ_(F) _(—) _(PUCCH)(F) parameter for a given format are defined in an information element (IE), such as the IE that is described in Section 5.1.2 of Third Generation Partnership Project (3GPP) Technical Specification (TS) 36.213, entitled, “RRC Protocol Specification,” V. 10.3.0, Rel. 10 (2011):

DeltaFList-PUCCH ::= SEQUENCE {   deltaF-PUCCH-Format1   Enumerated {deltaF-2, deltaF0, deltaF2},   deltaF-PUCCH-   Enumerated {deltaF1, deltaF3, deltaF5},   Format1b   deltaF-PUCCH-Format2   Enumerated {deltaF-2, deltaF0, deltaF1,   deltaF-PUCCH- deltaF2},   Format2a   deltaF-PUCCH-   Enumerated {deltaF-2, deltaF0, deltaF2},   Format2b   Enumerated {deltaF-2, deltaF0, deltaF2} }. In the above-described IE, each enumerated group specifies three possible parameters for a given format in decibels (dB). In this representation, the decibels follow the “deltaF” identifier. For the example above, for Format1, the IE specifies the possible following values: −2 dB, 0 dB and 2 dB.

The above-described IE, called a “DeltaFList-PUCCH IE” herein, is included in another IE, called a “UplinkPowerControlCommon IE,” which is defined below:

UplinkPowerControlCommon IE :: = SEQUENCE {  p0-NominalPUSCH   INTEGER (−126. .24),   alpha   ENUMERATED (a10, a104,   p0-NominalPUCCH a105, a106, a107, a108, a109, a11),   deltaFList-PUCCH   INTEGER (−127. . −96),   deltaPreambleMsg3   DeltaFList-PUCCH,   INTEGER (−1. . 6) }. The UplinkPowerControlCommon IE is further included in another IE, called a “RadioResourceConfigCommon IE,” which is broadcasted by a radio resource channel (RRC) system information block (SIB) message.

The DeltaFList-PUCCH IE parameter may be specified for other formats. In this regard, in accordance with some implementations, the wireless communication system 10 may use Format3 or Format1b with channel selection (Format1bCS), which may be defined in an “UplinkPowerControlCommon-v1020 IE”:

UplinkPowerControlCommon IE :: = SEQUENCE {  deltaF-PUCCH-Format3-r10   ENUMERATED (deltaF-1,   deltaF-PUCCH-Format1bCS-r10 deltaF0, deltaF1, deltaF2),   ENUMERATED (deltaF1,   deltaF2, spare2, spare1) } The UplinkPowerControlCommon-v1020 IE may also be included in the RRC SIB message.

Referring to FIG. 2, in accordance with systems and techniques, which are disclosed herein, a technique 50 may be used for purposes of regulating the power level of a given uplink control channel that is associated with a specific mobile station 30. Pursuant to the technique 50, a base station 32 transmits a unicast message that targets a particular mobile station 30 for purposes of regulating the power level of the mobile station's PUCCH channel. In this regard, the unicast message is received (block 54) by the mobile station 30 and identifies a parameter to control a power level of the associated uplink control channel. The mobile station 30 applies (block 58) the parameter such that the parameter is used (block 62) to regulate the power level of its associated uplink control channel. Thus, contrary to previous schemes for controlling the power level of the PUCCH, a specific parameter for controlling the power level of the PUCCH used by a specific mobile station 30 is determined and used to control the power level of the PUCCH, instead of a scheme that involves regulating the power levels of all of the PUCCHs in a given cell to be at the same power level.

Referring to FIG. 3, in accordance with implementations that are disclosed herein, the above-described unicast message contains a mobile station specific IE for the Δ_(F) _(—) _(PUCCH)(F) parameter, which may be described as follows:

DeltaFList-PUCCH-Dedicated ::= SEQUENCE {   deltaF-PUCCH-Format1   Enumerated (deltaF-2, deltaF0,   deltaF2 ),   deltaF-PUCCH-Format1b   Enumerated (deltaF1, deltaF3,   deltaF5 ),   deltaF-PUCCH-Format2   Enumerated (deltaF-2, deltaF0,   deltaF1, deltaF2),   deltaF-PUCCH-Format2a   Enumerated (deltaF-2, deltaF0,   deltaF2 ),   deltaF-PUCCH-Format2b   Enumerated (deltaF-2, deltaF0,   deltaF2 )   deltaF-PUCCH-Format3-r10   Enumerated (deltaF-1, deltaF0,   deltaF1m deltaF2,        deltaF3, deltaF4,        deltaF5, deltaF6),   deltaF-PUCCH-Format1bCS-r10   Enumerated (deltaF1, spare1,   spare2 ) }. In this manner, in accordance with some implementations, a given base station 32 (see FIG. 1, for example) may calculate the Δ_(F) _(—) _(PUCCH)(F) value for a given mobile station 30 (from one of the enumerated selectable values) at the time that the uplink CoMP status changes and, via a unicast message (i.e., via a message that specifically targets the mobile station 30) communicate the new Δ_(F) _(—) _(PUCCH)(F) parameter to the mobile station 30.

As a more specific example, the signaling between the base station node 32 and the mobile station 30 that occurs in connection with the technique 50 of FIG. 2 may be described by a signal flow graph 100 of FIG. 3, in accordance with example implementations. As depicted in FIG. 3, the mobile station 30 may continually communicate (110) with the base station 32 the state of the uplink CoMP or non-CoMP configuration of the mobile station 30. In this regard, the mobile station 30 may be in the uplink CoMP state in the previous stage by using the supporting information from the base station 32. In this case, the uplink signal provided by the mobile station 30 may be received/processed by the given reception point set (one reception point or multiple reception points, depending on the particular reception point set configuration). However, the mobile station 30 may not be in the uplink CoMP state. In this case, the uplink signal provided by the mobile station 30 may be processed pursuant to a non-CoMP processing standard set forth in such as 3GPP, LTE, Release 10.

The base station 32 continuously monitors (112) uplink signal statuses in multiple reception points (reception points within the same cell ID or different cell IDs) that may be used to support the uplink CoMP for the mobile station 30 and correspondingly make a decision for different mobile station states. The particular decision that is made depends on whether the mobile station 30 is currently in a CoMP state. In this manner, if the mobile station 30 is already in an uplink CoMP operation state, the base station 32 determines (block 114) whether to change the reception point set for the mobile station 30. If the mobile station 30 is in a non-uplink CoMP state, the base station 32 determines whether or not to change the status of the mobile station 30 from the non-CoMP state to a CoMP state with RP set information, also pursuant to block 114. For purposes of making the decision 114, the base station 32 may continually monitor the reception point signal statuses 112 and make the decisions, as set forth above.

Assuming that the base station 32 determines (block 114) that the power level for the PUCCH used by the mobile station is to change, the base station 32 communicates (block 116) the uplink CoMP configuration information to the mobile station 30. This information supports the mobile station's new uplink CoMP operation state and includes such parameters as the Δ_(F) _(—) _(PUCCH)(F) parameter value and possibly one or more parameters of Eq. 1 used to support the control channel, depending on the particular implementation.

When the mobile station 30 receives the message that indicates information for supporting the uplink CoMP operation at the desired power level, the mobile station 30 applies (block 122) the uplink transmission power according to Eq. 1, such that all original cell specific channel power control parameters are replaced by using the parameters value in the IE that is described above.

After the power level for the new uplink CoMP operation state is applied, pursuant to block 122, the mobile station 30 continues communicates over the PUCCH using the new power level for uplink transmission.

It is noted that in the above-described scenario, that change occurs in the context of an uplink CoMP status change. However, in accordance with further implementations, the base station 32 may change the value of the Δ_(F) _(—) _(PUCCH)(F) parameter for any reason.

In accordance with some implementations, the base station 32 may regulate the power levels for the PUCCHs in a reception point (RP) set-specific manner, i.e., regulate the power level of a group of PUCCHs based on the RP set configuration shared in common by the mobile station 30 that use the PUCCHs. In this regard, in accordance with some implementations, for the RP set specific control, a corresponding IE may be defined as follows:

DeltaFList-PUCCH-RpSet-Common ::= SEQUENCE {   deltaF-PUCCH-Format1   Enumerated (deltaF-2,   deltaF0, deltaF2 ),   deltaF-PUCCH-Format1b   Enumerated (deltaF1,   deltaF3, deltaF5 ),   deltaF-PUCCH-Format2   Enumerated (deltaF-2,   deltaF0, deltaF1, deltaF2),   deltaF-PUCCH-Format2a   Enumerated (deltaF-2,   deltaF0, deltaF2 ),   deltaF-PUCCH-Format2b   Enumerated (deltaF-2,   deltaF0, deltaF2 )   deltaF-PUCCH-Format3-r10   Enumerated (deltaF-1,        deltaF0, deltaF1,        deltaF2, deltaF3,        deltaF4, deltaF5,        deltaF6),   deltaF-PUCCH-Format1bCS-r10   Enumerated (deltaF1,   deltaF2, spare2, spare 1 ) }.

The RP set specific IE may be broadcast to all of the mobile stations 30 that are communication with the base station 32. In this regard, the parameters may be broadcast in a DeltaFList-PUCCH-RpSet-Common IE in an SIB, which is described below:

DeltaFList-PUCCH-RpSet-List ::=    SEQUENCE    (Size (1..maxRpSetNum) OF    DeltaFList-PUCCH-RpSet-Info DeltaFList-PUCCH-RpSet-Info SEQUENCE {   rpsetid   DeltaFList-PUCCH-RpSet-       BIT STRING (SIZE Common       (16)),       DeltaFList-PUCCH-       RpSet-Common }.

Each mobile station 30, receiving the RP set specific IE stores the list of parameters for the different reception point sets, so that when the base station 32 changes the reception point set for a given mobile station 30, the mobile station 30 retrieves the appropriate Δ_(F) _(—) _(PUCCH)(F) value, which is indexed by the reception point identifications and makes the corresponding PUCCH power level change.

More specifically, referring to FIG. 4, in accordance with some implementations, a technique 180 to regulate the PUCCH power level based in a RP set specific manner includes receiving (block 182) a broadcast message (in a given mobile station 30 and in other mobile stations 30) from a base station 32 identifying power control parameters, which are indexed according to potential reception point set configurations. These control parameters are stored, pursuant to block 184, in a given mobile station 30. The power control parameters are then selectively applied in the mobile station 30, pursuant to block 186, based on the current reception point set configuration. The given mobile station 30 may then regulate the power of its uplink control channel based on selective application of these power control parameters, pursuant to block 188.

As a more specific example, FIG. 5 depicts an example signal flow 200 between a mobile station 30 and a base station 32 illustrating communications that occur in connection with the RP set specific PUCCH power level regulation technique 180. Pursuant to the signal flow 200, the mobile station 30 receives (210) a broadcast, which contains the values of the Δ_(F) _(—) _(PUCCH)(F) parameter for different RP sets. The mobile station 30 stores these parameters, as indexed by the reception point identifications (for the different sets). The mobile station 30 communicates (214) with the base station 32 regarding the current CoMP configuration. Based on this configuration and the reception point signal statuses (block 224), the base station 32 determines (block 220) whether to change the RP set for the given mobile station 30.

Assuming the changes to be made, the base station 32 communicates (230) a new uplink CoMP configuration to the mobile station 30, including a new reception point set identification, identifying a new reception point configuration for the mobile station 30. In response to this new RP set configuration, the mobile station 30 applies (block 234) the new uplink CoMP configuration and the new PUCCH power control parameters based on the reception point set identification. The mobile station 30 thereafter use the new power level in communications (238) over its PUCCH.

Referring to FIG. 6, in accordance with exemplary implementations, the mobile station 30 may include, in general, one or more antennae 300 (one antenna 300 being depicted in FIG. 6) and a wireless transceiver 310 for purposes of transmitting and receiving signals over the wireless communication system 10 (see FIG. 1, for example). In general, the mobile station 30 may be a processor-based machine, which includes one or more processors 320 (microprocessors, microcontrollers, processing cores, and so forth), which execute instructions 330 that are stored in a non-transitory memory 325. The instructions 330, when executed by the processor(s) 320 cause the processor(s) 320 to perform one or more parts of the techniques that are disclosed herein, such as the technique 50 (FIG. 2) and/or the technique 180 (FIG. 4). Thus, in general, the instructions 330, when executed by the processor(s) 320 cause the processor(s) 320 to regulate the power level of an associated power uplink control channel used by a given mobile station 30 based on a mobile station-specific or a reception point-specific scheme, as disclosed herein. The memory 325 may be formed from semiconductor devices, optical devices, magnetic devices, resistive devices, phase change devices, and so forth, depending on the particular implementation.

Further implementations may include one or more of the following.

In an example implementation, a technique includes, in a mobile station that is part of a coordinated multi-point reception transmission/reception (CoMP) system, receiving a message from a base station, which identifies a parameter to control a power level of an uplink control channel used by the mobile station. The parameter is specifically determined for the mobile station by the base station. The technique includes applying the parameter in the mobile station and using the applied parameter to regulate power in communications by the mobile station over the uplink control channel.

In some implementations, the parameter includes a deltaf-PUCCH parameter.

In some implementations, receiving the message includes receiving a unicast message from the base station.

In some implementations, the message identifies at least one other parameter that is not specifically determined for the mobile station by the base station and applying the parameter includes determining an uplink communication power based at least in part on the at least one other parameter and the parameter determined specifically for the mobile station by the base station.

In some implementations, receiving the message includes receiving a system information block message.

In some implementations, the message further identifies a change in a reception point set configuration for the mobile station, and the technique further includes changing the reception point set configuration in the mobile station in response to the message.

In an example implementation, a mobile station includes a transceiver and at least one processor. The transceiver receives a message from a base station of a coordinated multi-point reception transmission/reception (CoMP) system identifying power control parameters indexed according to a plurality of reception point set configurations. The processor(s) are coupled to the transceiver to selectively apply the power control parameters based at least in part on a reception point set configuration used by the mobile station and regulate power in communications by the mobile station over the uplink control channel in response to the selective application of the power control parameters.

In some implementations, the processor(s) are adapted to select the power control parameters corresponding to the reception point set configuration used by the mobile station.

In some implementations, the message includes a broadcast message that is received by at least one other mobile station.

In some implementations, the processor(s) are adapted to store the power control parameters in the mobile station.

In some implementations, the transceiver is further adapted to receive another message including an identifier identifying a reception point set configuration for the mobile station; and the processor(s) are adapted to apply the identifier to select one of the power control parameters.

In some implementations, the processor(s) are adapted to select one of the power configuration parameters and combine the selected power configuration parameter to determine an uplink power for the mobile station.

In an example implementations, at least one machine readable medium stores a plurality of instructions that when executed by a computing device cause the computing device to selectively apply power control parameters based at least in part on a reception point set configuration used by a mobile station. The power control parameters are indicated by a message received from a base station of a coordinated multi-point reception transmission/reception (CoMP) system and are indexed according to a plurality of reception point set configurations. The instructions when executed by the computing device further cause the computing device to regulate power in communications by the mobile station over the uplink control channel in response to the selective application of the power control parameters.

While a limited number of examples have been disclosed herein, those skilled in the art, having the benefit of this disclosure, will appreciate numerous modifications and variations therefrom. It is intended that the appended claims cover all such modifications and variations. 

What is claimed is:
 1. A method comprising: in a mobile station that is part of a coordinated multi-point reception transmission/reception (CoMP) system, receiving a message from a base station identifying a parameter to control a power level of an uplink control channel used by the mobile station, the parameter being specifically determined for the mobile station by the base station; applying the parameter in the mobile station; and using the applied parameter to regulate power in communications by the mobile station over the uplink control channel.
 2. The method of claim 1, wherein the parameter comprises a deltaf-PUCCH parameter.
 3. The method of claim 1, wherein receiving the message comprises receiving a unicast message from the base station.
 4. The method of claim 1, wherein the message identifies at least one other parameter not specifically determined for the mobile station by the base station and applying the parameter comprises determining an uplink communication power based at least in part on the at least one other parameter and the parameter determined specifically for the mobile station by the base station.
 5. The method of claim 1, wherein the receiving comprises receiving a system information block message.
 6. The method of claim 1, wherein the message further identifies a change in a reception point set configuration for the mobile station, the method further comprising changing the reception point set configuration in the mobile station in response to the message.
 7. A mobile station comprising: a transceiver to receive a message from a base station of a coordinated multi-point reception transmission/reception (CoMP) system identifying power control parameters indexed according to a plurality of reception point set configurations; and at least one processor coupled to the transceiver to: selectively apply the power control parameters based at least in part on a reception point set configuration used by the mobile station; and regulate power in communications by the mobile station over the uplink control channel in response to the selective application of the power control parameters.
 8. The mobile station of claim 7, wherein the at least one processor is adapted to select the power control parameters corresponding to the reception point set configuration used by the mobile station.
 9. The mobile station of claim 7, wherein the parameters comprise a deltaf-PUCCH parameter.
 10. The mobile station of claim 7, wherein the message comprises a broadcast message, the broadcast message being received by at least one other mobile station.
 11. The mobile station of claim 7, wherein the message comprises a system information block message.
 12. The mobile station of claim 7, wherein the at least one processor is further adapted to store the power control parameters in the mobile station.
 13. The mobile station of claim 7, wherein the transceiver is further adapted to receive another message in the mobile station comprising an identifier identifying a reception point set configuration for the mobile station, and the at least one processor is further adapted to apply the identifier to select one of the power control parameters.
 14. The mobile station of claim 7, wherein the at least one processor is further adapted to select one of the power configuration parameters and combine the selected power configuration parameter with at least one other power configuration parameter to determine an uplink power for the mobile station.
 15. At least one machine readable medium that includes a plurality of instructions that when executed by a computing device cause the computing device to: selectively apply power control parameters based at least in part on a reception point set configuration used by a mobile station, the power control parameters being indicated by a message received from a base station of a coordinated multi-point reception transmission/reception (CoMP) system and being indexed according to a plurality of reception point set configurations; and regulate power in communications by the mobile station over the uplink control channel in response to the selective application of the power control parameters.
 16. The at least one machine readable medium of claim 15, wherein the parameters comprise a deltaf-PUCCH parameter. 